diff options
Diffstat (limited to 'gcc/loop-unroll.c')
| -rw-r--r-- | gcc/loop-unroll.c | 240 |
1 files changed, 120 insertions, 120 deletions
diff --git a/gcc/loop-unroll.c b/gcc/loop-unroll.c index 8812e68..6b7fe8a 100644 --- a/gcc/loop-unroll.c +++ b/gcc/loop-unroll.c @@ -32,7 +32,7 @@ along with GCC; see the file COPYING3. If not see #include "output.h" #include "expr.h" #include "hashtab.h" -#include "recog.h" +#include "recog.h" /* This pass performs loop unrolling and peeling. We only perform these optimizations on innermost loops (with single exception) because @@ -82,7 +82,7 @@ struct iv_to_split unsigned loc[3]; /* Location where the definition of the induction variable occurs in the insn. For example if N_LOC is 2, the expression is located at - XEXP (XEXP (single_set, loc[0]), loc[1]). */ + XEXP (XEXP (single_set, loc[0]), loc[1]). */ }; /* Information about accumulators to expand. */ @@ -91,14 +91,14 @@ struct var_to_expand { rtx insn; /* The insn in that the variable expansion occurs. */ rtx reg; /* The accumulator which is expanded. */ - VEC(rtx,heap) *var_expansions; /* The copies of the accumulator which is expanded. */ + VEC(rtx,heap) *var_expansions; /* The copies of the accumulator which is expanded. */ struct var_to_expand *next; /* Next entry in walking order. */ - enum rtx_code op; /* The type of the accumulation - addition, subtraction + enum rtx_code op; /* The type of the accumulation - addition, subtraction or multiplication. */ int expansion_count; /* Count the number of expansions generated so far. */ int reuse_expansion; /* The expansion we intend to reuse to expand - the accumulator. If REUSE_EXPANSION is 0 reuse - the original accumulator. Else use + the accumulator. If REUSE_EXPANSION is 0 reuse + the original accumulator. Else use var_expansions[REUSE_EXPANSION - 1]. */ unsigned accum_pos; /* The position in which the accumulator is placed in the insn src. For example in x = x + something @@ -462,13 +462,13 @@ peel_loop_completely (struct loop *loop) edge ein; struct niter_desc *desc = get_simple_loop_desc (loop); struct opt_info *opt_info = NULL; - + npeel = desc->niter; if (npeel) { bool ok; - + wont_exit = sbitmap_alloc (npeel + 1); sbitmap_ones (wont_exit); RESET_BIT (wont_exit, 0); @@ -479,7 +479,7 @@ peel_loop_completely (struct loop *loop) if (flag_split_ivs_in_unroller) opt_info = analyze_insns_in_loop (loop); - + opt_info_start_duplication (opt_info); ok = duplicate_loop_to_header_edge (loop, loop_preheader_edge (loop), npeel, @@ -492,7 +492,7 @@ peel_loop_completely (struct loop *loop) gcc_assert (ok); free (wont_exit); - + if (opt_info) { apply_opt_in_copies (opt_info, npeel, false, true); @@ -609,7 +609,7 @@ decide_unroll_constant_iterations (struct loop *loop, int flags) loop->lpt_decision.decision = LPT_UNROLL_CONSTANT; loop->lpt_decision.times = best_unroll; - + if (dump_file) fprintf (dump_file, ";; Decided to unroll the constant times rolling loop, %d times.\n", @@ -649,7 +649,7 @@ unroll_loop_constant_iterations (struct loop *loop) bool exit_at_end = loop_exit_at_end_p (loop); struct opt_info *opt_info = NULL; bool ok; - + niter = desc->niter; /* Should not get here (such loop should be peeled instead). */ @@ -661,10 +661,10 @@ unroll_loop_constant_iterations (struct loop *loop) sbitmap_ones (wont_exit); remove_edges = NULL; - if (flag_split_ivs_in_unroller + if (flag_split_ivs_in_unroller || flag_variable_expansion_in_unroller) opt_info = analyze_insns_in_loop (loop); - + if (!exit_at_end) { /* The exit is not at the end of the loop; leave exit test @@ -693,8 +693,8 @@ unroll_loop_constant_iterations (struct loop *loop) gcc_assert (ok); if (opt_info && exit_mod > 1) - apply_opt_in_copies (opt_info, exit_mod, false, false); - + apply_opt_in_copies (opt_info, exit_mod, false, false); + desc->noloop_assumptions = NULL_RTX; desc->niter -= exit_mod; desc->niter_max -= exit_mod; @@ -719,7 +719,7 @@ unroll_loop_constant_iterations (struct loop *loop) RESET_BIT (wont_exit, 0); if (desc->noloop_assumptions) RESET_BIT (wont_exit, 1); - + opt_info_start_duplication (opt_info); ok = duplicate_loop_to_header_edge (loop, loop_preheader_edge (loop), exit_mod + 1, @@ -730,7 +730,7 @@ unroll_loop_constant_iterations (struct loop *loop) ? DLTHE_RECORD_COPY_NUMBER : 0)); gcc_assert (ok); - + if (opt_info && exit_mod > 0) apply_opt_in_copies (opt_info, exit_mod + 1, false, false); @@ -746,7 +746,7 @@ unroll_loop_constant_iterations (struct loop *loop) } /* Now unroll the loop. */ - + opt_info_start_duplication (opt_info); ok = duplicate_loop_to_header_edge (loop, loop_latch_edge (loop), max_unroll, @@ -770,7 +770,7 @@ unroll_loop_constant_iterations (struct loop *loop) { basic_block exit_block = get_bb_copy (desc->in_edge->src); /* Find a new in and out edge; they are in the last copy we have made. */ - + if (EDGE_SUCC (exit_block, 0)->dest == desc->out_edge->dest) { desc->out_edge = EDGE_SUCC (exit_block, 0); @@ -869,7 +869,7 @@ decide_unroll_runtime_iterations (struct loop *loop, int flags) loop->lpt_decision.decision = LPT_UNROLL_RUNTIME; loop->lpt_decision.times = i - 1; - + if (dump_file) fprintf (dump_file, ";; Decided to unroll the runtime computable " @@ -888,7 +888,7 @@ split_edge_and_insert (edge e, rtx insns) if (!insns) return NULL; - bb = split_edge (e); + bb = split_edge (e); emit_insn_after (insns, BB_END (bb)); /* ??? We used to assume that INSNS can contain control flow insns, and @@ -973,11 +973,11 @@ unroll_loop_runtime_iterations (struct loop *loop) bool exit_at_end = loop_exit_at_end_p (loop); struct opt_info *opt_info = NULL; bool ok; - + if (flag_split_ivs_in_unroller || flag_variable_expansion_in_unroller) opt_info = analyze_insns_in_loop (loop); - + /* Remember blocks whose dominators will have to be updated. */ dom_bbs = NULL; @@ -1119,7 +1119,7 @@ unroll_loop_runtime_iterations (struct loop *loop) sbitmap_ones (wont_exit); RESET_BIT (wont_exit, may_exit_copy); opt_info_start_duplication (opt_info); - + ok = duplicate_loop_to_header_edge (loop, loop_latch_edge (loop), max_unroll, wont_exit, desc->out_edge, @@ -1129,7 +1129,7 @@ unroll_loop_runtime_iterations (struct loop *loop) ? DLTHE_RECORD_COPY_NUMBER : 0)); gcc_assert (ok); - + if (opt_info) { apply_opt_in_copies (opt_info, max_unroll, true, true); @@ -1143,7 +1143,7 @@ unroll_loop_runtime_iterations (struct loop *loop) basic_block exit_block = get_bb_copy (desc->in_edge->src); /* Find a new in and out edge; they are in the last copy we have made. */ - + if (EDGE_SUCC (exit_block, 0)->dest == desc->out_edge->dest) { desc->out_edge = EDGE_SUCC (exit_block, 0); @@ -1266,7 +1266,7 @@ decide_peel_simple (struct loop *loop, int flags) /* Success. */ loop->lpt_decision.decision = LPT_PEEL_SIMPLE; loop->lpt_decision.times = npeel; - + if (dump_file) fprintf (dump_file, ";; Decided to simply peel the loop, %d times.\n", loop->lpt_decision.times); @@ -1294,15 +1294,15 @@ peel_loop_simple (struct loop *loop) struct niter_desc *desc = get_simple_loop_desc (loop); struct opt_info *opt_info = NULL; bool ok; - + if (flag_split_ivs_in_unroller && npeel > 1) opt_info = analyze_insns_in_loop (loop); - + wont_exit = sbitmap_alloc (npeel + 1); sbitmap_zero (wont_exit); - + opt_info_start_duplication (opt_info); - + ok = duplicate_loop_to_header_edge (loop, loop_preheader_edge (loop), npeel, wont_exit, NULL, NULL, DLTHE_FLAG_UPDATE_FREQ @@ -1312,7 +1312,7 @@ peel_loop_simple (struct loop *loop) gcc_assert (ok); free (wont_exit); - + if (opt_info) { apply_opt_in_copies (opt_info, npeel, false, false); @@ -1411,7 +1411,7 @@ decide_unroll_stupid (struct loop *loop, int flags) loop->lpt_decision.decision = LPT_UNROLL_STUPID; loop->lpt_decision.times = i - 1; - + if (dump_file) fprintf (dump_file, ";; Decided to unroll the loop stupidly, %d times.\n", @@ -1443,16 +1443,16 @@ unroll_loop_stupid (struct loop *loop) struct niter_desc *desc = get_simple_loop_desc (loop); struct opt_info *opt_info = NULL; bool ok; - + if (flag_split_ivs_in_unroller || flag_variable_expansion_in_unroller) opt_info = analyze_insns_in_loop (loop); - - + + wont_exit = sbitmap_alloc (nunroll + 1); sbitmap_zero (wont_exit); opt_info_start_duplication (opt_info); - + ok = duplicate_loop_to_header_edge (loop, loop_latch_edge (loop), nunroll, wont_exit, NULL, NULL, @@ -1461,7 +1461,7 @@ unroll_loop_stupid (struct loop *loop) ? DLTHE_RECORD_COPY_NUMBER : 0)); gcc_assert (ok); - + if (opt_info) { apply_opt_in_copies (opt_info, nunroll, true, true); @@ -1513,7 +1513,7 @@ ve_info_hash (const void *ves) return (hashval_t) INSN_UID (((const struct var_to_expand *) ves)->insn); } -/* Return true if IVTS1 and IVTS2 (which are really both of type +/* Return true if IVTS1 and IVTS2 (which are really both of type "var_to_expand *") refer to the same instruction. */ static int @@ -1521,7 +1521,7 @@ ve_info_eq (const void *ivts1, const void *ivts2) { const struct var_to_expand *const i1 = (const struct var_to_expand *) ivts1; const struct var_to_expand *const i2 = (const struct var_to_expand *) ivts2; - + return i1->insn == i2->insn; } @@ -1534,12 +1534,12 @@ referenced_in_one_insn_in_loop_p (struct loop *loop, rtx reg) unsigned i; int count_ref = 0; rtx insn; - - body = get_loop_body (loop); + + body = get_loop_body (loop); for (i = 0; i < loop->num_nodes; i++) { bb = body[i]; - + FOR_BB_INSNS (bb, insn) { if (rtx_referenced_p (reg, insn)) @@ -1550,14 +1550,14 @@ referenced_in_one_insn_in_loop_p (struct loop *loop, rtx reg) } /* Determine whether INSN contains an accumulator - which can be expanded into separate copies, + which can be expanded into separate copies, one for each copy of the LOOP body. - + for (i = 0 ; i < n; i++) sum += a[i]; - + ==> - + sum += a[i] .... i = i+1; @@ -1567,8 +1567,8 @@ referenced_in_one_insn_in_loop_p (struct loop *loop, rtx reg) sum2 += a[i]; .... - Return NULL if INSN contains no opportunity for expansion of accumulator. - Otherwise, allocate a VAR_TO_EXPAND structure, fill it with the relevant + Return NULL if INSN contains no opportunity for expansion of accumulator. + Otherwise, allocate a VAR_TO_EXPAND structure, fill it with the relevant information and return a pointer to it. */ @@ -1583,10 +1583,10 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) set = single_set (insn); if (!set) return NULL; - + dest = SET_DEST (set); src = SET_SRC (set); - + if (GET_CODE (src) != PLUS && GET_CODE (src) != MINUS && GET_CODE (src) != MULT) @@ -1606,12 +1606,12 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) op1 = XEXP (src, 0); op2 = XEXP (src, 1); - + if (!REG_P (dest) && !(GET_CODE (dest) == SUBREG && REG_P (SUBREG_REG (dest)))) return NULL; - + if (rtx_equal_p (dest, op1)) accum_pos = 0; else if (rtx_equal_p (dest, op2)) @@ -1623,7 +1623,7 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) the initialization of the expansions with zero and the summation of the expansions at the end of the computation will yield wrong results for (x = something - x) thus avoid using it in that case. */ - if (accum_pos == 1 + if (accum_pos == 1 && GET_CODE (src) == MINUS) return NULL; @@ -1631,15 +1631,15 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) if (!referenced_in_one_insn_in_loop_p (loop, dest)) return NULL; - + if (rtx_referenced_p (dest, something)) return NULL; - - mode1 = GET_MODE (dest); + + mode1 = GET_MODE (dest); mode2 = GET_MODE (something); - if ((FLOAT_MODE_P (mode1) - || FLOAT_MODE_P (mode2)) - && !flag_associative_math) + if ((FLOAT_MODE_P (mode1) + || FLOAT_MODE_P (mode2)) + && !flag_associative_math) return NULL; if (dump_file) @@ -1660,11 +1660,11 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) ves->expansion_count = 0; ves->reuse_expansion = 0; ves->accum_pos = accum_pos; - return ves; + return ves; } /* Determine whether there is an induction variable in INSN that - we would like to split during unrolling. + we would like to split during unrolling. I.e. replace @@ -1684,7 +1684,7 @@ analyze_insn_to_expand_var (struct loop *loop, rtx insn) i = i0 + 2 ... - Return NULL if INSN contains no interesting IVs. Otherwise, allocate + Return NULL if INSN contains no interesting IVs. Otherwise, allocate an IV_TO_SPLIT structure, fill it with the relevant information and return a pointer to it. */ @@ -1734,7 +1734,7 @@ analyze_iv_to_split_insn (rtx insn) ivts->next = NULL; ivts->n_loc = 1; ivts->loc[0] = 1; - + return ivts; } @@ -1757,7 +1757,7 @@ analyze_insns_in_loop (struct loop *loop) VEC (edge, heap) *edges = get_loop_exit_edges (loop); edge exit; bool can_apply = false; - + iv_analysis_loop_init (loop); body = get_loop_body (loop); @@ -1769,10 +1769,10 @@ analyze_insns_in_loop (struct loop *loop) opt_info->iv_to_split_head = NULL; opt_info->iv_to_split_tail = &opt_info->iv_to_split_head; } - + /* Record the loop exit bb and loop preheader before the unrolling. */ opt_info->loop_preheader = loop_preheader_edge (loop)->src; - + if (VEC_length (edge, edges) == 1) { exit = VEC_index (edge, edges, 0); @@ -1782,7 +1782,7 @@ analyze_insns_in_loop (struct loop *loop) can_apply = true; } } - + if (flag_variable_expansion_in_unroller && can_apply) { @@ -1792,7 +1792,7 @@ analyze_insns_in_loop (struct loop *loop) opt_info->var_to_expand_head = NULL; opt_info->var_to_expand_tail = &opt_info->var_to_expand_head; } - + for (i = 0; i < loop->num_nodes; i++) { bb = body[i]; @@ -1803,10 +1803,10 @@ analyze_insns_in_loop (struct loop *loop) { if (!INSN_P (insn)) continue; - + if (opt_info->insns_to_split) ivts = analyze_iv_to_split_insn (insn); - + if (ivts) { slot1 = htab_find_slot (opt_info->insns_to_split, ivts, INSERT); @@ -1816,10 +1816,10 @@ analyze_insns_in_loop (struct loop *loop) opt_info->iv_to_split_tail = &ivts->next; continue; } - + if (opt_info->insns_with_var_to_expand) ves = analyze_insn_to_expand_var (loop, insn); - + if (ves) { slot2 = htab_find_slot (opt_info->insns_with_var_to_expand, ves, INSERT); @@ -1830,7 +1830,7 @@ analyze_insns_in_loop (struct loop *loop) } } } - + VEC_free (edge, heap, edges); free (body); return opt_info; @@ -1839,7 +1839,7 @@ analyze_insns_in_loop (struct loop *loop) /* Called just before loop duplication. Records start of duplicated area to OPT_INFO. */ -static void +static void opt_info_start_duplication (struct opt_info *opt_info) { if (opt_info) @@ -1952,7 +1952,7 @@ split_iv (struct iv_to_split *ivts, rtx insn, unsigned delta) seq = get_insns (); end_sequence (); emit_insn_before (seq, insn); - + if (validate_change (insn, loc, var, 0)) return; @@ -1970,7 +1970,7 @@ split_iv (struct iv_to_split *ivts, rtx insn, unsigned delta) emit_move_insn (dest, src); seq = get_insns (); end_sequence (); - + emit_insn_before (seq, insn); delete_insn (insn); } @@ -1982,22 +1982,22 @@ static rtx get_expansion (struct var_to_expand *ve) { rtx reg; - + if (ve->reuse_expansion == 0) reg = ve->reg; else reg = VEC_index (rtx, ve->var_expansions, ve->reuse_expansion - 1); - + if (VEC_length (rtx, ve->var_expansions) == (unsigned) ve->reuse_expansion) ve->reuse_expansion = 0; - else + else ve->reuse_expansion++; - + return reg; } -/* Given INSN replace the uses of the accumulator recorded in VE +/* Given INSN replace the uses of the accumulator recorded in VE with a new register. */ static void @@ -2005,10 +2005,10 @@ expand_var_during_unrolling (struct var_to_expand *ve, rtx insn) { rtx new_reg, set; bool really_new_expansion = false; - + set = single_set (insn); gcc_assert (set); - + /* Generate a new register only if the expansion limit has not been reached. Else reuse an already existing expansion. */ if (PARAM_VALUE (PARAM_MAX_VARIABLE_EXPANSIONS) > ve->expansion_count) @@ -2021,7 +2021,7 @@ expand_var_during_unrolling (struct var_to_expand *ve, rtx insn) validate_change (insn, &SET_DEST (set), new_reg, 1); validate_change (insn, &XEXP (SET_SRC (set), ve->accum_pos), new_reg, 1); - + if (apply_change_group ()) if (really_new_expansion) { @@ -2037,7 +2037,7 @@ expand_var_during_unrolling (struct var_to_expand *ve, rtx insn) way we can prevent cases where the sign of the final result is effected by the sign of the expansion. Here is an example to demonstrate this: - + for (i = 0 ; i < n; i++) sum += something; @@ -2051,7 +2051,7 @@ expand_var_during_unrolling (struct var_to_expand *ve, rtx insn) i = i+1 sum2 += something; .... - + When SUM is initialized with -zero and SOMETHING is also -zero; the final result of sum should be -zero thus the expansions sum1 and sum2 should be initialized with -zero as well (otherwise we will get +zero @@ -2068,16 +2068,16 @@ insert_var_expansion_initialization (struct var_to_expand *ve, if (VEC_length (rtx, ve->var_expansions) == 0) return; - + start_sequence (); - if (ve->op == PLUS || ve->op == MINUS) + if (ve->op == PLUS || ve->op == MINUS) for (i = 0; VEC_iterate (rtx, ve->var_expansions, i, var); i++) { if (honor_signed_zero_p) zero_init = simplify_gen_unary (NEG, mode, CONST0_RTX (mode), mode); else zero_init = CONST0_RTX (mode); - + emit_move_insn (var, zero_init); } else if (ve->op == MULT) @@ -2086,15 +2086,15 @@ insert_var_expansion_initialization (struct var_to_expand *ve, zero_init = CONST1_RTX (GET_MODE (var)); emit_move_insn (var, zero_init); } - + seq = get_insns (); end_sequence (); - + insn = BB_HEAD (place); while (!NOTE_INSN_BASIC_BLOCK_P (insn)) insn = NEXT_INSN (insn); - - emit_insn_after (seq, insn); + + emit_insn_after (seq, insn); } /* Combine the variable expansions at the loop exit. PLACE is the @@ -2110,7 +2110,7 @@ combine_var_copies_in_loop_exit (struct var_to_expand *ve, basic_block place) if (VEC_length (rtx, ve->var_expansions) == 0) return; - + start_sequence (); if (ve->op == PLUS || ve->op == MINUS) for (i = 0; VEC_iterate (rtx, ve->var_expansions, i, var); i++) @@ -2124,13 +2124,13 @@ combine_var_copies_in_loop_exit (struct var_to_expand *ve, basic_block place) sum = simplify_gen_binary (MULT, GET_MODE (ve->reg), var, sum); } - + expr = force_operand (sum, ve->reg); if (expr != ve->reg) emit_move_insn (ve->reg, expr); seq = get_insns (); end_sequence (); - + insn = BB_HEAD (place); while (!NOTE_INSN_BASIC_BLOCK_P (insn)) insn = NEXT_INSN (insn); @@ -2138,18 +2138,18 @@ combine_var_copies_in_loop_exit (struct var_to_expand *ve, basic_block place) emit_insn_after (seq, insn); } -/* Apply loop optimizations in loop copies using the - data which gathered during the unrolling. Structure +/* Apply loop optimizations in loop copies using the + data which gathered during the unrolling. Structure OPT_INFO record that data. - + UNROLLING is true if we unrolled (not peeled) the loop. REWRITE_ORIGINAL_BODY is true if we should also rewrite the original body of the loop (as it should happen in complete unrolling, but not in ordinary peeling of the loop). */ static void -apply_opt_in_copies (struct opt_info *opt_info, - unsigned n_copies, bool unrolling, +apply_opt_in_copies (struct opt_info *opt_info, + unsigned n_copies, bool unrolling, bool rewrite_original_loop) { unsigned i, delta; @@ -2157,21 +2157,21 @@ apply_opt_in_copies (struct opt_info *opt_info, rtx insn, orig_insn, next; struct iv_to_split ivts_templ, *ivts; struct var_to_expand ve_templ, *ves; - + /* Sanity check -- we need to put initialization in the original loop body. */ gcc_assert (!unrolling || rewrite_original_loop); - + /* Allocate the basic variables (i0). */ if (opt_info->insns_to_split) for (ivts = opt_info->iv_to_split_head; ivts; ivts = ivts->next) allocate_basic_variable (ivts); - + for (i = opt_info->first_new_block; i < (unsigned) last_basic_block; i++) { bb = BASIC_BLOCK (i); orig_bb = get_bb_original (bb); - + /* bb->aux holds position in copy sequence initialized by duplicate_loop_to_header_edge. */ delta = determine_split_iv_delta ((size_t)bb->aux, n_copies, @@ -2183,24 +2183,24 @@ apply_opt_in_copies (struct opt_info *opt_info, next = NEXT_INSN (insn); if (!INSN_P (insn)) continue; - + while (!INSN_P (orig_insn)) orig_insn = NEXT_INSN (orig_insn); - + ivts_templ.insn = orig_insn; ve_templ.insn = orig_insn; - + /* Apply splitting iv optimization. */ if (opt_info->insns_to_split) { ivts = (struct iv_to_split *) htab_find (opt_info->insns_to_split, &ivts_templ); - + if (ivts) { gcc_assert (GET_CODE (PATTERN (insn)) == GET_CODE (PATTERN (orig_insn))); - + if (!delta) insert_base_initialization (ivts, insn); split_iv (ivts, insn, delta); @@ -2212,7 +2212,7 @@ apply_opt_in_copies (struct opt_info *opt_info, ves = (struct var_to_expand *) htab_find (opt_info->insns_with_var_to_expand, &ve_templ); if (ves) - { + { gcc_assert (GET_CODE (PATTERN (insn)) == GET_CODE (PATTERN (orig_insn))); expand_var_during_unrolling (ves, insn); @@ -2224,9 +2224,9 @@ apply_opt_in_copies (struct opt_info *opt_info, if (!rewrite_original_loop) return; - + /* Initialize the variable expansions in the loop preheader - and take care of combining them at the loop exit. */ + and take care of combining them at the loop exit. */ if (opt_info->insns_with_var_to_expand) { for (ves = opt_info->var_to_expand_head; ves; ves = ves->next) @@ -2234,7 +2234,7 @@ apply_opt_in_copies (struct opt_info *opt_info, for (ves = opt_info->var_to_expand_head; ves; ves = ves->next) combine_var_copies_in_loop_exit (ves, opt_info->loop_exit); } - + /* Rewrite also the original loop body. Find them as originals of the blocks in the last copied iteration, i.e. those that have get_bb_copy (get_bb_original (bb)) == bb. */ @@ -2244,17 +2244,17 @@ apply_opt_in_copies (struct opt_info *opt_info, orig_bb = get_bb_original (bb); if (get_bb_copy (orig_bb) != bb) continue; - + delta = determine_split_iv_delta (0, n_copies, unrolling); for (orig_insn = BB_HEAD (orig_bb); orig_insn != NEXT_INSN (BB_END (bb)); orig_insn = next) { next = NEXT_INSN (orig_insn); - + if (!INSN_P (orig_insn)) continue; - + ivts_templ.insn = orig_insn; if (opt_info->insns_to_split) { @@ -2268,7 +2268,7 @@ apply_opt_in_copies (struct opt_info *opt_info, continue; } } - + } } } |